Philadelphia International Airport
Philadelphia, United StatesPHL / KPHL
Major airport · 139 direct destinations · 4 runways · longest runway 12,001 ft
68 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Philadelphia → Denver
PHL
PhiladelphiaPhiladelphia International Airport
PhiladelphiaPhiladelphia International AirportDENDenverDenver International Airport
DenverDenver International Airport- Distance
- 1,553 mi
- Estimated flight time
- ~3h 40m
Denver is currently 2 hours behind Philadelphia.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 6.5 flights a day, observed from October 2025 to September 2026.
- 6.5
- flights per day
- 10
- busiest month · Jun
- 4
- quietest month · Jan
- 3 hr 41 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 4Jan2026
- 5Feb
- 5Mar
- 6Apr
- 8May
- 10Jun
- 9Jul
- 9Aug
- 8Sep
- 6Oct2025
- 7Nov
- 5Dec
Airlines
Who flies it
United Airlinesall year
American Airlinesall year
Southwest Airlinesall year
Frontier Airlinesall year
Through the day
Departure times
Local time in Philadelphia. Most departures between 08:00 and 11:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 7.2Mon
- 6.1Tue
- 5.9Wed
- 6.6Thu
- 7.3Fri
- 6.8Sat
- 6.7Sun
Fleet
Aircraft observed
- Boeing 737-800B73836%
- Boeing 737 MAX 8B38M25%
- Airbus A321A32110%
- Boeing 737 MAX 9B39M6%
- Boeing 737-900B7395%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 4 | 146 |
|
| February 2026 | 5 | 135 |
|
| March 2026 | 5 | 133 |
|
| April 2026 | 6 | 164 |
|
| May 2026 | 8 | 208 |
|
| June 2026 | 10 | 278 |
|
| July 2026 | 9 | 294 |
|
| August 2026 | 9 | 267 |
|
| September 2026 | 8 | 227 |
|
| October 2025 | 6 | 177 |
|
| November 2025 | 7 | 198 |
|
| December 2025 | 5 | 167 |
|
Airlines observed on this route
From observed callsign routes on PHL-DEN - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Philadelphia: 139.
- Direct destinations observed from Denver: 203.
The airports on this route
Denver International Airport
Denver, United StatesDEN / KDEN
International hub · 203 direct destinations · 6 runways · longest runway 16,001 ft
43 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
ABE DENLehigh Valley International AirportAllentown is about 55 mi from Philadelphia.View route →PHL COSCity of Colorado Springs Municipal AirportColorado Springs is about 73 mi from Denver.View route →EWR DENNewark Liberty International AirportNewark is about 80 mi from Philadelphia.View route →BWI DENBaltimore/Washington International Thurgood Marshall AirportBaltimore is about 90 mi from Philadelphia.View route →
About the route from Philadelphia to Denver
The observed direct connection between Philadelphia International Airport (PHL) and Denver International Airport (DEN) covers approximately 1,553 mi. The estimated flight time is around 3h 40m. American Airlines, Frontier Airlines, Southwest Airlines and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Philadelphia from Denver by air?
- The great-circle distance between Philadelphia International Airport and Denver International Airport is approximately 1,553 mi.
- How long is the flight from Philadelphia to Denver?
- Based on the distance, the estimated flight time is about 3h 40m. This is an estimate, not a schedule.
- Is there a direct connection from Philadelphia to Denver?
- Yes, a direct connection between PHL and DEN has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: American Airlines, Frontier Airlines, Southwest Airlines and United Airlines.
- How often is there a flight from Philadelphia to Denver?
- On average around 6.5 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 2,394 observed flights. Mainly United Airlines, American Airlines, Southwest Airlines. That is an observation, not a timetable.
- What is the current time difference between Philadelphia and Denver?
- Denver is currently 2 hours behind Philadelphia.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.